Dynamo-armature



(No Model.) v 4 Sheets-Sheet l. J. A. HAYES.

DYNAMO ARMATURE. No. 399,328. Patented Mar. l2, 1889.

(No Model.) 4 Sheets-Sheet 3.

l J A HAYES. DYNAMO ARMATURE.

Patented Mer. l2, 1889.

N PETERS Phnm-Lilhogmpher, wanhingmn. D. C

(No Model.)

4 4Sheets-Sheet 4.

J. A. HAYES. DYNAMO ARMATURE INVENTDR,

UNITED STATES PATENT OEEicE.

JOEL A. HAYES, OF SAN FRANCISCO, CALIFORNIA.

DYNAMO-ARMATURE.

SPECIFICATION forming part of Letters Patent No. 399,328, dated March 12, 1889. Application tiled May 2, 1888. Serial No. 272,608. (No modeld.

To all whom it may concern: l

Be it known that l, J OEL A. HAYES, a citi zen of the United States, and a resident of l San Francisco, in t-he county of San Fran-l cisco and State of California, have invented i certain new and useful improvement in Dyname-Electric Machines or Motors, of which the following is a speciiication.

My invention relates to the mechanical eenstruction of ring-armatures for dynamo-elecl, tric machines or motors.

The armature involved in my invention is constructed in sections and the sections are built up of insulated laminated iron plates, l and is described in detail in the accompanyl ing drawings. l

Figure l is a side elevation of nearly one half of the armature, the other halt being of the same construction. Fig. 2 is a sectional vicwof the whole armature, the section being in a pla-ne passing through the axis ot the art mature, and through the periphery of the armature midway between any two coils. Fig. 3 l is a top View of one of the coils, showing also a i small portion ot the armature on eac-h side of i the coil. Fig. 4 is a sectional view of one of the cores ot' the coils, t-he section being in a plane at right angles to the axis of the armature l and passing through the center of the core; and Fig. 5 is a top view of the core shown in l. Fig. G is an end view of the plate g, showing the holes i for ventilation and holes i h for the passage ot the plates forming the l cores of the coils. Fig. 7 is a sectional view of a portion of the armature-rin at right angles to the axis ot the ring, showing merel clearly the internal construction of the ring.

The armature consists of the combination of a hub, o, spokes l), radiating from the said hub, the said spokes containin holes adapted to receive screws c and c', rivets or similar retaining devices, arccurved iron plates d, l separated by arc-curved sheets of insulating material, @,both containing holes through which pass the said screws c, surrounded by 1 insulating-tubes f, the outside plates of. iron l being thicker than the others for the sake of stiffness, the said plates and sheets being attached in sets to each ot said spokes, and the sets being separated by coils wound upon cores or spools, described particularly by retence to Figs. a and 5.

Each core consists of the combination of: two brass or other non-magnetic plates, g, and strips or plates h ot iron connecting the brass pla-tes, passing through the brass plates, and containing holes, which come opposite similar holes in the plates d, and through which pass the screws c. An extension of each plate h lies between every two of the plates d. Holes 'L' are contained in the brass plates g, and airspaces j are contained between some of the plates h, so that air may leak into the interior of `the core, especially during the draft rcaused by the rapidrotation of the armature,

thereby reducing the heating eiiiect of the electric currents to a minimum.

The modus operandi is as follows: 'l he currents of electricity ow through the coils,` while the magnetic currents are in the direction ot the plates-2'.. c., at right angles to the direction of the electric currents. The extensions of 7L are arc-curved, so as to fit in between the arc-curved plates (l. By having the outer plate thicker than the plates toward the center it becomes possible to make the latter as thin as the ordinary sheet-iron,

thereby increasing the number of layers and reducing the Foucault currents. ln any given case the thickness is such as to obtain the desired rigidity.

ln Fig. t3 screw-heads are shown between the slots. Vlt is by these screws that the plates g] are fastened to the plates upon which the coils are wound.

l claim as my invention-- l. In a dynaino-electritl machine or motor, a riiig-armaturc consisting ol the combination of armature-ciiils wound upon rectilinear iron plates, and arc-shaped plates laminated and connecting the iirst-named plates.

ln a dynamo-electric machine or motor,

i a ring-armature consisting ot the combination of separable laminated sections, and coils wound upon alternate sections.

Il. ln a dynamo-electric machine or motor, a ring-armature consisting ot the combinat-ion ol' radial supports provided with holes, insulated arc-curved iron plates arranged in sets which are respectively located at each of said supports, pairs ot non-magnetic disks located between the said sets of iron-plates, separated rectilinear iron plates connecting l the members of each pair and extending be- IOO tween the arc-curved plates, and bolts or similar retaining devices passing through the arc-curved iron plates and through the cxtensions of the iron plates which connect the members of the pairs ot' non-magnetic plates and into the holes in said radial supports.

4. In a dynamo-electric machine or motor,

a ring-armature consisting' et' the coml'iinal tion ot coils provided with cores of laminated insulateifl rectilinear iron plates, arc-curved extensions upon the plates and containing holes, laminated insulated arc-curved iron plates Whose ends t among the said extensions and whose ends contain holes, and bolts or similar retaining devices passing through the arc-curved iron plates7 and other bolts passing through said holes, and all the bolts being secured to radial supports around a suitable hub, the bolts beingI surrounded by insulating-tubes.

5. In a rjlynamo-clectric machine or motor, a ring-armature consisting of the combination of alternate arccurved and rectilinear insulated iron plates and arc-curved extensions upon the said rectilinear plates, fitting among the said arc-curved plates, the said combination being attached to a central hub, and the said rectilinear plates being provided with coils of conducting-Wire, such as copper.

6. In a dynamo-electric machine or motor, a ringarmature consisting of the combination of alternate arc-curved and-rectilinear insulated iron plates, arc-shaped extensions upon some of the said rectilinear plates fitting among the ends ot4 the said arc-curved plates, one set of bolts, insulated, passing through thc arc-curved plates, a second set ot bolts passing through the ends ot the arc-curved plates and through the said extensions, and a suitable central support receiving the ends of all the screws.

7. In a dyi1amo-eleetric machine or motor, a ring-armature consisting of the combination of separable sections of laminated iron plates, and coils wound upon alternate scctions, which are provided with polar extensions projecting among the plates of t'he immediately adjacent sections.

S. In a dynamo-electric machine or motor, an armature-coil Whose core consists of a set of separated iron plates connecting non-magnetic plates, and projecting through them to form polar extensions.

In testimony that I claim the foregoing as my invention I have signed my name, in presence of two witnesses, this 9th day of April, 1888.

JOEL A. HAYES.

Yitn esses:

W. H. ALisoN, ALFRED A. ENQUIsT. 

